Elasticity of spider silks

被引：59

作者：

Liu, Yi ^{[1
]}

Shao, Zhengzhong ^{[2
,3
]}

Vollrath, Fritz ^{[1
]}

机构：

[1] Univ Oxford, Dept Zool, Oxford OX1 3PS, England

[2] Fudan Univ, Key Lab Mol Engn Polymers, Minist Educ, Shanghai 200433, Peoples R China

[3] Fudan Univ, Dept Macromol Sci, Shanghai 200433, Peoples R China

来源：

BIOMACROMOLECULES | 2008年 / 9卷 / 07期

关键词：

D O I：

10.1021/bm7014174

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 [生物化学与分子生物学]; 081704 [应用化学];

摘要：

The elasticity of spider MAA silks containing varying proline content was investigated and compared with that of silkworm (Bombyx mori) silk. For silks with similar breaking strain (suggesting similar molecular order), the elasticity appears to increase with increasing proline content. Particularly, across all spider silks, intra- and interspecies relationships are found between capacity to shrink (Csh) and strain recovery, while only the interspecies relationship is found between Csh and work recovery. Four factors, that is, molecular orientation, crystallinity, amino acid motif, and hydration, are discussed to explain the origin of silk's elasticity. Our study corroborates the view that proline-containing motifs contribute to the elasticity of not only spider silks, but also other bioelastomers.

引用

页码：1782 / 1786

页数：5

共 51 条

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ELASTIN AS A RANDOM-NETWORK ELASTOMER - A MECHANICAL AND OPTICAL ANALYSIS OF SINGLE ELASTIN FIBERS [J].